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This section describes the new dfsmedia pipeline and its capabilities. For a description of the old media pipeline, see this link section 5.2.
Understanding the request
The new dfsmedia pipeline is accessible on the following endpoint: http(s)://<sitecore>/dfsmedia
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Field | Description |
|---|---|
SiloId | This is the Id of the silo that has the asset requested. |
AssetId | Is the Id of the asset that is requested. |
Quality | Overrides the quality specified in the Sitecore field. Quality supports both 'by name' and 'by id' |
Resize * | Only applies to image assets. One of the concepts and principles when using a DAM system is to use specific qualities for every use. If images are needed in different sizes, it should be configured in Digizuite™ DAM. However, there is a resize feature. Width How wide the image will be in pixels. Height How high the image will be in pixels. By default a resize does not keep aspect ratio, but you can set an option to keep aspect ratio. |
Compress * | Only applies to image assets. Indicates whether the asset should be saved using a worse quality, thereby reducing the physical size. from 0-100 is allowed, where 0 is the worst quality, but least physical storage. |
Options * | Options is a dash ("-") separate list and can contain these options: download - Will download the asset requested. keepaspectratio - Will enforce aspect ratio on from the original asset, if a resize is requested. upscaleallowed - Will allow upscaling an image. The default is to disallow that. |
*Optional
Understanding the DigizuiteMediaCache
The DigizuiteMediaCache is where everything, execpt videos, is saved. The cache location is configurable and is located in DFS.Settings.config
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The extention is retrieved from the file saved in the cache. The naming scheme enable unique names and hence the extention can be extracted from the file in the cache. Orginally the file is saved with the correct extention based on what is served from the Digizuite.
UNC path
The dfsmedia pipeline also supports having a centralized cache, which means multiple servers can have the same cache. This decreases storage, but also performance, because files are then cached on a UNC which is slower than having it locally. This is something each client has to have an opinion on.
Implementation
The new dfsmedia pipeline is implemented as a httphandler, using a pipeline in Sitecore. This pipeline is located in the DFS.Services.config file:
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Outcommenting the security part of the pipeline increases performance of the cost of security, but for content delivery servers for public websites, this is typically not important and therefore it may be beneficial to outcomment this step. |
Extending the pipeline
If the pipeline is to be extended, for instance if some custom processing needs to be done to the image, then this may be done in between any of the steps above.
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